Find the Reference Angle 220

Problem

220

Solution

1. Identify the quadrant in which the given angle θ=220 lies. Since 180<220<270 the angle is in Quadrant III.

2. Apply the formula for the reference angle θ′ in Quadrant III, which is θ′=θ−180

3. Subtract the values to find the reference angle.

220−180=40

Final Answer

θ′=40

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